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TWP & TWB Heat Reactivated Desiccant Dryers AIRTEK PREMIUM PRODUCTS FOR INDUSTRY

TWP & TWB - Air Compressors | Dryers › app › administrator › product...Airtek Package “E” systems match our TWP and TWB dryers with Airtek high performance filters. In-line

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  • TWP & TWBHeat Reactivated Desiccant Dryers

    AIRTEKPREMIUM PRODUCTS FOR INDUSTRY

  • Externally Heated and

    Blower Purge Desiccant Air Dryers

    2

    A master controller cycles the flow of

    compressed air between the towers.

    While one tower is “on-line” drying, the

    other tower is “off-line” regenerating.

    Regeneration, sometimes referred to as

    “purging”, is the process of stripping the

    accumulated moisture from the “off-line”

    bed.

    Both types of Airtek heat reactivated

    dryers combine heat with either a small

    portion of the dried compressed air or

    with forced ambient air to affect

    regeneration.

    As heated, low pressure, purge air flows

    gently through the regenerating bed, it

    desorbs the moisture that had

    accumulated on the surface of the

    desiccant during the drying cycle and

    exhausts it to the atmosphere.

    Airtek heat reactivated desiccant air

    dryers use the adsorption method to

    remove moisture from compressed air.

    Pressure dew points ranging from minus

    40OF (-40OC) to minus 100OF (-73OC) are

    achieved by directing the flow of

    saturated compressed air over a bed of

    desiccant. The most commonly used

    desiccant is activated alumina, a

    spherically shaped, hygroscopic material,

    selected for its consistent size, shape and

    extreme surface to mass ratio. This

    physically tough and chemically inert

    material is contained in two pressure

    vessels commonly referred to as “dual”

    or “twin” towers. As the saturated

    compressed air flows through the bed of

    the “on-line” tower, its moisture content

    adheres to the surface of the desiccant.

    The dry compressed air is then

    discharged from the vessel into the

    distribution system.

  • Flow Schematic

    3

    Air Out

    1% Cooldown

    Valve

    Dry

    ing

    Hea

    ter

    Pur

    ging

    Pre-Exhaust Valve

    Main Exhaust Valve

    Inlet Valve

    Air In

    Blower

    ExhaustMufflers

    Airtek Blower Purge (TWB)

    Airtek Externally Heated with Patented Multi-Port

    (TWP)

    Airtek’s patented Multi-Port

    Regeneration System (TWP Series)

    affects superior desiccant bed

    regeneration and, as a result, provides

    better and more consistent performance.

    The Multi-Port Regeneration System

    injects heated purge air at precise points

    up and down the towers length providing

    a more balanced distribution of heat. This

    system prevents the desiccant on top

    from prematurely deteriorating while

    providing the bottom of the chamber with

    enough heated purge air to allow

    complete regeneration on every cycle.

    The energy saving temperature monitor-

    ing system senses the exiting purge air

    temperature. When the purge air

    temperature increases to a pre-set point

    at which the desiccant bed is fully heated

    and regenerated, the blower and heater

    are turned off.

    Airtek’s Secondary Blowdown System is

    standard on all TWP Series and TWB

    Series heat reactivated air dryers 1000

    SCFM and larger. It improves perfor-

    mance and efficiency while increasing

    desiccant life. The depressurization stage

    strips moisture from the bottom of the

    tank through a purge muffler. Once

    depressurization is complete, the system

    switches to the main exhaust where final

    regeneration is accomplished with low

    pressure purge air. Bypassing the exhaust

    mufflers eliminates back pressure and

    allows for more thorough regeneration.

    Air Out

    Purge

    Regulator

    Dry

    ing

    Hea

    ter

    Pur

    ging

    Pre-Exhaust Valve

    Main Exhaust Valve

    Inlet Valve

    Air In

    ExhaustMufflers

  • Control Center

    4

    Control Center Monitors:

    Features:

    Control Center affords superior dryer con-

    trol along with digital telemetry for

    remote analysis of performance.

    With StarWatchTM activated Airtek can

    monitor and analyze every moment of

    operation, 24-7; it can be done wirelessly.

    When StarWatchTM is active on an

    installation, it is as if an Airtek factory

    employee is right in your plant, advising

    your process engineer.

    Airtek’s Control Center for Heat

    Reactivated Desiccant Air Dryers

    features a complete complement of data

    acquisition functions. The easy to use

    RemoteWatchTM Software : virtual control, diagrams and graphics

    StarWatchTM ready w/68 channels of data & over 60 process values

    Temperature & pressure instrumentation package

    Energy Management-PowerLocTM dew point digital readout w/Power Save

    4-20mA input w/setpoint and alarm for connection to your flow meter

    Intelligent display w/operational information

    Full system retentive alarm network (event) log

    Programmable process setpoints

    Dryer operating “state” annunciation display

    Automatic data logging 24/7, 365 days of all operational information

    16 channel “programmable” common alarm

    RS-232 communications port (Optional RS-485)

    Access system via StarWatchTM or Modbus protocols.

    160 fields of operational information.

    Connectivity: telco line, cellular wireless modem, cellular wireless internet, Ethernet

    Dual Mode communications. Modbus Protocol, and StarWatchTM Protocol.

    UL Rated

    TEMPERATURE (thermistor sensors)Purge Air“Special” (fail-safe) Heater Over TemperatureLeft ExhaustRight ExhaustDryer InletDryer Outlet

    PRESSURE (Transducer signals can be either 4-20ma or 1-5 volt DC)InletLeft TowerRight Tower

    PurgePre-Filter PSID (Package “E” only 400 SCFM models & larger)After Filter PSID (Package “E” only 400 SCFM models & larger)

    DEW POINT (Energy Management) - OPTIONAL

    PowerLoc

    (“Fast Response” Digital Readout with Power Save feature)

  • Quick Glance Operational Status

    Indicates the status of each tower. LED’s indicate which

    tower is “on-line” drying, “off-line” regenerating as well

    as the regeneration stages.

    The Control Center features a backlit four line character

    display that monitors operation and status. Including

    regenerating countdowns and time remaining.

    Sequence Annunciator

    Digital Readout

    Allows the operator to quickly and safely step the dryer

    through a complete 8 hour cycle, in a matter of minutes.

    Manual Stepping

    The Control Center also controls Airtek’s “ThermaLoc”

    heater protection system. ThermaLoc ensures maximum

    reliability and eliminates the safety concerns often

    associated with heat reactivated dryers. Heaters are

    protected by a totally redundant dual shutdown system that

    utilizes independent mercury contactors. In addition to the

    redundant temperature controllers, the system monitors

    pressure and shuts the heater down in the event of low line

    pressure. Blower purge dryers have controls to prevent the

    heater from energizing if the blower is not running.

    ThermaLoc (10 Year Heater Warranty)

    Allows the dryer to function in either the primary heated mode or

    the auxiliary heatless mode. Should the system experience a

    temporary overload or a heater failure, the dryer can easily be

    switched over to operate in the heatless mode. This way the dryer

    will remain on line until such time as service can be conveniently

    scheduled. The Dual Mode Back Up System offers unparalleled

    flexibility, eliminates downtime and prevents business

    interruptions.

    Dual Mode Heatless Back Up System

    5

  • Switching Valves

    6

    Dryers up to 800 SCFM are equipped with our time-proven and

    dependable non-lubricated switching valves. These independent, air

    operated valves are specifically designed for compressed air service.

    They are resistant to desiccant dust and can be maintained without being

    removed from the dryer.

    Non-Lubricated Valves

    Design Parameters

    High Performance, Rotary Actuated Switching Valves are standard on

    dryers 1000 SCFM and larger. These premium, air operated butterfly

    valves are specifically designed for compressed air. They provide more

    opening and closing force compared to other types of valves. An indicator

    shows the “opened/closed” position of the valve and service can be

    performed without disturbing dryer piping.

    These valves are so reliable, they carry a Three Year Factory Warranty.

    The tower, heater, and purge lines are insulated to increase dryer

    performance and efficiency by reducing radiant heat loss. It also keeps

    the unit within the safety parameters set forth by OSHA. Insulation

    suitable for indoor service is standard on all Airtek Heat Reactivated

    Dryers (Insulation suitable for outdoor service is an available option).

    Rotary Actuated Valves

    Tower Insulation

    Airtek Externally Heated and Blower Purge dryers are designed to process a specific volume of

    compressed air and deliver it to the discharge at a desired pressure dew point. Both dryers are rated for

    a -40OF (-40OC) pressure dew point. Dew point spikes, inherent on all blower purge dryers, can be

    reduced by activating Airtek’s standard Supplemental Cooldown Purge feature. Standard ratings are

    based on inlet conditions of +100OF (38OC), 100 PSIG (6.9 Bar) and 100% flow.

    (Dryer performance will vary with different inlet conditions).

    Moisture load, velocity, contact time and cycle time determine the amount of desiccant

    required. To assure design performance, each tower is carefully sized to allow a mini-

    mum contact time of 7 seconds. To prevent bed movement, desiccant dusting and

    fluidization, air flow velocity is kept below 55 feet per minute. Externally

    Heated and Blower Purge dryers are designed for an eight-hour cycle

    (four hours “on-line” drying, four hours “off-line” regenerating,

    cooling and repressurizing). For significant energy savings

    and Digital Dew Point Readout, all Airtek desiccant

    dryers can be equipped with an optional

    PowerLoc Demand Control Module.

  • Without proper filtration, desiccant air dryers will not work. Desiccant dryers are designed to

    adsorb vapor from compressed air; they are not designed for liquid. When liquid, especially

    oil, is allowed to enter the desiccant chamber, it coats the desiccant material preventing any

    further adsorption. Oil coated desiccant can not be regenerated, and must be replaced. To

    protect the desiccant from contact with liquids, a coalescing pre-filter is required. The

    pre-filter must be properly sized and properly installed with a dependable automatic drain

    and a visual indicator to determine element condition. To protect downstream equipment from

    potential damage caused by the abrasive effects of desiccant dust, a particulate after-filter is

    also required.

    Most field problems experienced with desiccant air dryers are the result of improper filter

    selection, installation, maintenance, and/or draining of condensate.

    Considering the importance of filtration to dryer performance, Airtek recommends that all

    desiccant dryers be ordered as a complete, factory assembled Air Treatment System. The

    Optional Airtek Package “E” includes: properly sized, factory installed coalescing prefilter

    and particulate after filter with electronic drain system (No Loss Demand Drains standard on

    400 SCFM and larger), and integrated digital element condition indicators.

    Factory packaging, with matched components and single point connections reduces

    installation costs, ensures performance and allows Airtek to assume total responsibility for

    system integrity.

    Complete Air Treatment System

    7

  • Includes dryer with factory installedpre-filter and after-filter.

    Package “E”

    Includes dryer with factory installed pre-filterand after-filter with system bypass.

    Package “EB”

    Includes dryer with factory installed dualselectable pre-filters and single after-filter.

    Package “EC”

    Includes dryer with factoryinstalled dual selectable

    pre and after-filters.

    Note: Optional Mist Eliminators are available as extra

    protection for standard packages.

    Package “ED”

    Package Schematic

    Airtek Package “E” systems match our TWP and TWB dryers

    with Airtek high performance filters. In-line filters (JW) are

    used on systems 100 through 300 SCFM and two stage (JLA)

    severe duty filters are used on systems 400 SCFM and larger.

    Mist eliminators are available as extra protection.

    The coalescing pre-filter is installed at the dryer inlet.

    It protects the dryer by removing liquids and reducing the

    contamination level of the compressed air to .01 PPM by

    weight. The element is DOP rated at 99.9+% efficient in the

    0.3 to 0.6 micron range. An integrated digital indicator is

    provided to determine element condition. An electronic drain

    valve is provided on systems 100 through 300 SCFM to

    ensure proper drainage. On systems 400 SCFM and larger a

    zero air loss demand drain is provided. The drain controller

    includes push to test, drain alarm, and common alarm contact.

    To protect downstream equipment from desiccant dust a

    particulate after-filter is installed at the dryer discharge.

    The after-filter element is designed to remove solid

    particulates from compressed air. The hybrid pleated filter

    media provides high dirt retention, low pressure drop, and

    long element life. The element is 99+% effective in removing

    particles 0.9 micron and larger. A integrated digital element

    condition indicator is also provided.

    Filters

    8

    DRYER AFPF DRYER AFPFDRYER AFPF DRYER AFPF

    AFDRYERDRYER AF

    PFPF

    PFPF

    AF

    AF

    AF

    AF

    DRYERDRYER

    PFPF

    PFPF

    Air Out

    2nd StageDrain

    1st StageDrain

    Air In First Stage

    Quiet Zone

    Second Stage

    Apex Filter Element

  • PowerLoc System

    9

    The Control Center is designed to accommodate Airtek’s

    optional PowerLoc Demand Controller.

    PowerLoc automatically adjusts energy use to actual

    moisture load. Moisture loading is affected by inlet

    temperature, pressure, relative humidity and flow. These

    conditions vary throughout the day and rarely combine in

    such a manner as to produce maximum moisture loads. An

    inlet temperature reduction of just 20OF (-7OC) will reduce the

    moisture load by almost 50%. Desiccant dryers are

    normally sized for “worst case” operation with the cycle

    fixed to accommodate maximum moisture loads. Because the

    fixed cycle does not compensate for fluctuating loads, dryers

    not equipped with PowerLoc waste energy by regenerating

    more often than necessary. PowerLoc eliminates this

    unnecessary use of energy by delaying regeneration until the

    total design moisture load is achieved. The system monitors

    actual moisture loading and limits the number of purge cycles

    accordingly.

    At $0.08 per KWH, the PowerLoc would save $6,730

    annually when used with a 1000 SCFM externally heated

    dryer operating at 75% load for 8,000 hours, at an average inlet temperature of +80OF (27OC).

    Digital dew point control provides for additional energy savings by allowing the operator to select

    higher dew points when appropriate. The moisture probe is contained in and protected by a rugged,

    stainless steel housing that also contains an electronics package for continuous self calibration,

    temperature compensation, and signal stabilization. Due to less frequent cycling, switching valves

    and desiccant will last longer and require less maintenance.

    The PowerLoc ceramic sensor is made from state-of-the-art metalized ceramic and replaces

    traditional materials such as aluminum, silicon and hydroscopic salts. This fast reponse sensor is

    made from a ceramic tile that is plated and vapor deposited to form a surface that is very sensitive

    to small changes in water vapor pressure.

    The proprietary coating processes make the ceramic sensor inherently faster to respond than other

    impedance or capacity sensors currently available. The ceramic sensor features the latest digital

    technology with calibration data stored directly in the sensor’s memory, and is equipped with a

    built-in thermistor for automatic temperature compensation. The PowerLoc is traceable to the

    National Institute of Standards and Technology. A certificate of traceability is available.

    The PowerLoc ceramic sensor is protected by an 80 micron sintered metal guard and is enclosed in

    a rugged, stainless steel housing with a pressure rating of 5000 PSIG. This housing increases the

    sensor’s ability to withstand reasonable shock and vibration.

    Effects of Inlet Temperature on Moisture Load

    .47 .55 .65 .75 .87 1.0

    75OF (24OC)

    80OF (27OC)

    85OF (29OC)

    90OF (32OC)

    95OF (35OC)

    100OF (38OC)

    Factor

    Inlet Temp

    erature

  • Engineering Data Specifications

    10

    MODEL

    TWP100TWP130TWP200

    TWP250TWP300TWP400

    TWP500TWP600TWP800

    TWP1000TWP1200TWP1500

    TWP2000TWP2600TWP3000

    TWP4000TWP5000TWP6000

    TWP7500TWP9000

    CapacitySCFM

    @ 100 PSIG(Nm3/[email protected] Bar)

    ApproximatePurge SCFM

    (Nm3/min)

    Length(mm)

    Width(mm)

    82 (2083)82 (2083)82 (2083)

    84 (2134)84 (2134)90 (2286)

    90 (2286)96 (2438)90 (2286)

    101 (2564)101 (2564)101 (2564)

    101 (2564)101 (2564)110 (2794)

    114 (2896)114 (2896)114 (2896)

    114 (2896)114 (2896)

    WeightLbs (Kg)

    AirIn/Out(mm)

    HeaterKW

    1.51.53

    346

    699

    131318

    252530

    385060

    85100

    AverageKW

    .741.01.5

    1.92.33.0

    3.74.56.0

    7.48.911.2

    16.419.322.3

    29.737.044.6

    56.069.7

    RecommendedPackage "E"

    100 (2.8)135 (3.8)200 (5.7)

    250 (7.1)300 (8.5)400 (11.3)

    500 (14.1)600 (17.0)800 (22.7)

    1000 (28.3)1250 (35.4)1500 (42.5)

    2200 (62.3)2600 (73.6)3000 (84.9)

    4000 (113.3)5000 (141.6)6000 (169.9)

    7500 (212.4)9000 (254.8)

    680 (308)720 (327)920 (417)

    1180 (535)1370 (621)1400 (635)

    2060 (934)2350 (1066)3035 (1377)

    4195 (1903)5215 (2365)5715 (2592)

    6250 (2835)6750 (3062)7055 (3200)

    18080 (8201)20710 (9394)25200 (11431)

    27100 (12292)28600 (12973)

    TA-PE 0111TA-PE 0151TA-PE 0201

    TA-PE 0301TA-PE 0301TA-PE 0401

    TA-PE 0601TA-PE 0601TA-PE 0901

    TA-PE 1001TA-PE 1251TA-PE 1601

    TA-PE 2001TA-PE 2601TA-PE 3001

    TA-PE 4001TA-PE 5001TA-PE 6001

    TA-PE 7501TA-PE 9001

    1"1"1-1/2"

    1-1/2"1-1/2"2-1/2"

    2-1/2"2-1/2"2-1/2"

    3" FL 3" FL 4" FL

    4" FL4" FL6" FL

    6" FL6" FL6" FL

    8" FL8" FL

    37 (940)37 (940)44 (1118)

    45 (1143)47 (1194)74 (1880)

    74 (1880)74 (1880)96 (2438)

    96 (2438)96 (2438)144 (3658)

    144 (3658)144 (3658)144 (3658)

    168 (4267)210 (5334)210 (5334)

    210 (5334)210 (5334)

    33 (838)33 (838)39 (991)

    39 (991)39 (991)41 (1041)

    41 (1041)41 (1041)48 (1219)

    48 (1219)48 (1219)72 (1829)

    72 (1829)72 (1829)72 (1829)

    78 (1981)90 (2286)90 (2286)

    90 (2286)96 (2438)

    Height(mm)

    120 / 1 / 60120 / 1 / 60240 / 1 / 60

    240 / 1 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60

    PowerSupply

    Volts/Phase/Hz

    Dryer with Package "E"

    7 (.2) 9.5 (.27) 14 (.4)

    17.5 (.5) 21 (.6) 28 (.8)

    35 (1.0) 42 (1.2) 54 (1.5)

    70 (2.0) 84 (2.4)105 (3.0)

    140 (4.0)182 (5.1)210 (5.9)

    280 (7.9)350 (9.9)420 (11.9)

    525 (14.9)630 (17.9)

    (25.4)(25.4)(38.1)

    (38.1)(38.1)(50.8)

    (50.8)(50.8)(50.8)

    (76.2)(76.2)(101.6)

    (101.6)(101.6)(152.4)

    (152.4)(152.4)(152.4)

    (203.2)(203.2)

    TWP Externally Heated Desiccant Air Dryer

    MODEL

    TWB100TWB200TWB300

    TWB400TWB500TWB600

    TWB800TWB1000TWB1200

    TWB1500TWB2000TWB2600

    TWB3000TWB4000TWB5000

    TWB6000TWB7500 TWB9000

    CapacitySCFM

    @ 100 PSIG(Nm3/[email protected] Bar)

    BlowerHP

    Length(mm)

    Width (mm)

    78 (1981)78 (1981)86 (2184)

    90 (2286)90 (2286)96 (2438)

    90 (2286)101 (2565)113 (2870)

    100 (2540100 (2540)110 (2794)

    111 (2819)114 (2896)114 (2896)

    114 (2896)114 (2896)126 (3200)

    WeightLbs (Kg)

    AirIn/Out(mm)

    HeaterKW

    366

    91212

    181825

    303850

    6075

    100

    115135150

    AverageKW

    RecommendedPackage "E"

    100 (2.8)200 (5.7)300 (8.5)

    400 (11.3)500 (14.1)600 (17.0)

    800 (22.7)1000 (28.3)1250 (35.4)

    1500 (42.5)2200 (62.3)2600 (73.6)

    3000 (84.9)4000 (113.3)5000 (141.6)

    6000 (169.9)7500 (212.4)9000 (254.8)

    1050 (476)1500 (680)1900 (862)

    2180 (989)2840 (1288)3420 (1551)

    4490 (2037)5700 (2585)6300 (2858)

    8250 (3742)9850 (4468)12210 (5538)

    15170 (6881)18910 (8577)21590 (9793)

    26500 (12020)28800 (13063)32100 (14560)

    TA-PE 0112TA-PE 0202TA-PE 0302

    TA-PE 0402TA-PE 0602TA-PE 0602

    TA-PE 0802TA-PE 1002TA-PE 1252

    TA-PE 1602TA-PE 2002TA-PE 2602

    TA-PE 3002TA-PE 4002TA-PE 5002

    TA-PE 6002TA-PE 7502TA-PE 9002

    1"1-1/2"1-1/2"

    2-1/2"2-1/2"2-1/2"

    2-1/2"3" FL3" FL

    4" FL4" FL4" FL

    6" FL6" FL6" FL

    6" FL8" FL8" FL

    54 (1372)54 (1372)66 (1676)

    74 (1880)74 (1880)96 (2438)

    108 (2743)108 (2743)108 (2743)

    144 (3658)144 (3658)156 (3962)

    156 (3962)204 (5182)204 (5182)

    204 (5182)210 (5334)220 (5588)

    42 (1067)42 (1067)48 (1219)

    41 (1041)41 (1041)48 (1219)

    54 (1372)54 (1372)54 (1372)

    72 (1829)72 (1829)84 (2134)

    84 (2134)96 (2438)96 (2438)

    96 (2438)96 (2438)102 (2591)

    Height (mm)

    Dryer with Package "E"

    .75

    .751.5

    1.522

    55

    5.5

    7.57.510

    101515

    202530

    (25.4)(38.1)(38.1)

    (50.8)(50.8)(50.8)

    (50.8)(76.2)(76.2)

    (101.6)(101.6)(101.6)

    (152.4)(152.4)(152.4)

    (152.4)(203.2)(203.2)

    TWB Blower Purge Desiccant Air Dryer

    1.82.94.7

    5.97.48.6

    13.415.718.4

    23.531.638.3

    42.958.670.2

    86.0107.0129.0

    120 / 1 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    480 / 3 / 60480 / 3 / 60480 / 3 / 60

    PowerSupply

    Volts/Phase/Hz

    Notes: Dimensions and weight are for dryer with Package E installed.Dimensions measured in inches and millimeters.Weight measured in pounds and kilograms and includes desiccant (shipped loose models 1500 and up).Specifications and dimensions are subject to change without notice.

  • Equipment

    11

    4087 Walden AvenueLancaster, New York 14086

    Ph. 716.685.4040 Fx.716.685.1010

    Email: [email protected]

    Patents issued: 6,099,620; 5,207,072; 5,099,655; 5,062,571; other patents pending. The equipment

    indicated in the catalog is meant for use in operating “compressed air driven” apparatuses. At no time

    should any Airtek equipment be used for breathing air situations unless all government regulations

    regarding breathing air are met.

    Airtek®, Smart Cycle®, Cold Trap®, StarWatch® and Powerloc® are Registered Trademarks of Rayco

    Enterprises, Inc. DBA Airtek

    © 2001 Rayco Enterprises, Inc. DBA Airtek, Lancaster, New York Printed in U.S.A.

    Brochure ID # DES 1-2006

    AIRTEKPREMIUM PRODUCTS FOR INDUSTRY

    Capacity Correction FactorsINLET AIR PRESSURE CORRECTION

    A PSIBARFACTOR

    503.5

    .56

    604.1

    .65

    704.9

    .74

    805.5

    .83

    906.2

    .91

    1006.9

    1

    1107.6

    1.09

    1208.3

    1.18

    1309.0

    1.27

    1409.7

    1.37

    15010.3

    1.43

    TEMPERATURE CORRECTION

    B TEMP OF

    OC

    FACTOR

    9032

    1.35

    9535

    1.16

    10038

    1

    10541

    .85

    11043

    .74

    11546

    .64

    12049

    .56

    EXAMPLE CALCULATIONS

    TWP500 Corrected for 120 PSI (8.3 Bar) +110OF ( 43OC)

    CORRECTED CAPACITY = (RATED CAPACITY) X (PSI Correction) X (Temperature Correction)

    = 500 SCFM (13.9 Nm3/min) X (1.18) X (.74)

    = 437 SCFM (12.1 Nm3/min)

    Standard Equipment

    Optional Equipment

    Alarm, Failure to Switch

    Alarm, Contacts for Common

    Annunciator, Systems Sequence

    Blower Flow Interlock (TWB Models)

    Blower Silencer (TWB Models)

    Compressor Surge Protection

    Control Center

    Control System, Dual Redundant (ThermaLoc)

    Cycle Stepping

    Dual Mode, Heatless Backup

    Fail-Safe Operation

    Filter, Control Air

    Heater, Long Life, Low Watt Density

    Independent Switching Valves

    Indicator, Moisture

    Indicator, Purge Flow

    Instrumentation, Full

    Insulation, Indoor Tower

    Over-Temperature Safety Control

    Ports, Separate Tower Fill/Drain

    Power Saver Exhaust Shutdown

    Pressure Equalization

    Screens, Stainless Steel Diffuser

    Solid State Sensors

    Standby Mode

    Thermostats, Dual Heater

    Valves, Cushioned Seat Check

    Valves, High Performance Butterfly (1000 SCFM & Larger)

    Vessels, ASME Coded

    Warranty, 10-Year Heater

    Warranty, 3-Year Valve (1000 SCFM & larger)

    Actuator Valve Limit Switch

    Filters, Pre and After Sets

    Insulation, Outdoor

    MOD-BUS

    NEMA Classifications, All

    Non-Yellow Metals

    Pressure to 1000 PSIG

    StarWatchTM

    Voltages, Non-Standard

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